Explore the Grand Palace, an iconic complex that was the official residence of Thai kings, and the adjacent Wat Phra Kaew, home to the Emerald Buddha, open daily 8:30am to 3:30pm.
Enjoy arguably the best Pad Thai in Bangkok at Thip Samai, renowned for its authentic flavors, open 5pm to midnight, so grab takeout or switch to afternoon location nearby for now.
Tour Wat Arun, the Temple of Dawn with its stunning architecture, open from 8am to 6pm, then walk/boat across to Wat Pho famous for its Reclining Buddha, open 8am to 6:30pm.
Take a full-day cruise exploring beautiful limestone islands and caves, including James Bond Island, tour typically runs 8am to 4pm with hotel transfers included.